From a2d545804961bc04ce3cd28f0cb15a12bc08186a Mon Sep 17 00:00:00 2001
From: Robin Genz <mail@robingenz.dev>
Date: Fri, 16 Feb 2024 16:30:22 +0100
Subject: [PATCH] feat(barcode-scanning): vote system

---
 .../mlkit/barcodescanning/BarcodeScanner.java | 23 ++++++++++++++++++-
 .../ios/Plugin/BarcodeScanner.swift           | 19 ++++++++++++++-
 2 files changed, 40 insertions(+), 2 deletions(-)

diff --git a/packages/barcode-scanning/android/src/main/java/io/capawesome/capacitorjs/plugins/mlkit/barcodescanning/BarcodeScanner.java b/packages/barcode-scanning/android/src/main/java/io/capawesome/capacitorjs/plugins/mlkit/barcodescanning/BarcodeScanner.java
index 24786f5..709c42f 100644
--- a/packages/barcode-scanning/android/src/main/java/io/capawesome/capacitorjs/plugins/mlkit/barcodescanning/BarcodeScanner.java
+++ b/packages/barcode-scanning/android/src/main/java/io/capawesome/capacitorjs/plugins/mlkit/barcodescanning/BarcodeScanner.java
@@ -44,6 +44,7 @@
 import io.capawesome.capacitorjs.plugins.mlkit.barcodescanning.classes.results.GetMaxZoomRatioResult;
 import io.capawesome.capacitorjs.plugins.mlkit.barcodescanning.classes.results.GetMinZoomRatioResult;
 import io.capawesome.capacitorjs.plugins.mlkit.barcodescanning.classes.results.GetZoomRatioResult;
+import java.util.HashMap;
 
 public class BarcodeScanner implements ImageAnalysis.Analyzer {
 
@@ -70,6 +71,8 @@ public class BarcodeScanner implements ImageAnalysis.Analyzer {
     @Nullable
     private ModuleInstallProgressListener moduleInstallProgressListener;
 
+    private HashMap<String, Integer> barcodeRawValueVotes = new HashMap<String, Integer>();
+
     private boolean isTorchEnabled = false;
 
     public BarcodeScanner(BarcodeScannerPlugin plugin) {
@@ -135,6 +138,7 @@ public void stopScan() {
         camera = null;
         barcodeScannerInstance = null;
         scanSettings = null;
+        barcodeRawValueVotes.clear();
     }
 
     public void readBarcodesFromImage(String path, ScanSettings scanSettings, ReadBarcodesFromImageResultCallback callback)
@@ -347,7 +351,10 @@ public void analyze(@NonNull ImageProxy imageProxy) {
                         return;
                     }
                     for (Barcode barcode : barcodes) {
-                        handleScannedBarcode(barcode, imageSize);
+                        Integer votes = voteForBarcode(barcode);
+                        if (votes >= 10) {
+                            handleScannedBarcode(barcode, imageSize);
+                        }
                     }
                 }
             )
@@ -418,4 +425,18 @@ private GmsBarcodeScannerOptions buildGmsBarcodeScannerOptions(ScanSettings scan
         GmsBarcodeScannerOptions options = new GmsBarcodeScannerOptions.Builder().setBarcodeFormats(formats[0], formats).build();
         return options;
     }
+
+    private Integer voteForBarcode(Barcode barcode) {
+        String rawValue = barcode.getRawValue();
+        if (rawValue == null) {
+            return 1;
+        } else {
+            if (barcodeRawValueVotes.containsKey(rawValue)) {
+                barcodeRawValueVotes.put(rawValue, barcodeRawValueVotes.get(rawValue) + 1);
+            } else {
+                barcodeRawValueVotes.put(rawValue, 1);
+            }
+            return barcodeRawValueVotes.get(rawValue);
+        }
+    }
 }
diff --git a/packages/barcode-scanning/ios/Plugin/BarcodeScanner.swift b/packages/barcode-scanning/ios/Plugin/BarcodeScanner.swift
index 9de324c..605f8d6 100644
--- a/packages/barcode-scanning/ios/Plugin/BarcodeScanner.swift
+++ b/packages/barcode-scanning/ios/Plugin/BarcodeScanner.swift
@@ -15,6 +15,7 @@ typealias MLKitBarcodeScanner = MLKitBarcodeScanning.BarcodeScanner
 
     private var cameraView: BarcodeScannerView?
     private var scanCompletionHandler: (([Barcode]?, AVCaptureVideoOrientation?, String?) -> Void)?
+    private var barcodeRawValueVotes = [String: Int]()
 
     init(plugin: BarcodeScannerPlugin) {
         self.plugin = plugin
@@ -50,6 +51,7 @@ typealias MLKitBarcodeScanner = MLKitBarcodeScanning.BarcodeScanner
             self.cameraView = nil
         }
         self.scanCompletionHandler = nil
+        self.barcodeRawValueVotes.removeAll()
     }
 
     @objc public func readBarcodesFromImage(imageUrl: URL, settings: ScanSettings, completion: @escaping ([Barcode]?, String?) -> Void) {
@@ -257,6 +259,18 @@ typealias MLKitBarcodeScanner = MLKitBarcodeScanning.BarcodeScanner
     private func handleScannedBarcode(barcode: Barcode, imageSize: CGSize, videoOrientation: AVCaptureVideoOrientation?) {
         plugin.notifyBarcodeScannedListener(barcode: barcode, imageSize: imageSize, videoOrientation: videoOrientation)
     }
+
+    private func voteForBarcode(barcode: Barcode) -> Int {
+        guard let rawValue = barcode.rawValue else {
+            return 1
+        }
+        if let votes = self.barcodeRawValueVotes[rawValue] {
+            self.barcodeRawValueVotes[rawValue] = votes + 1
+        } else {
+            self.barcodeRawValueVotes[rawValue] = 1
+        }
+        return self.barcodeRawValueVotes[rawValue] ?? 1
+    }
 }
 
 extension BarcodeScanner: BarcodeScannerViewDelegate {
@@ -266,7 +280,10 @@ extension BarcodeScanner: BarcodeScannerViewDelegate {
             self.stopScan()
         } else {
             for barcode in barcodes {
-                self.handleScannedBarcode(barcode: barcode, imageSize: imageSize, videoOrientation: videoOrientation)
+                let votes = self.voteForBarcode(barcode: barcode)
+                if votes >= 10 {
+                    self.handleScannedBarcode(barcode: barcode, imageSize: imageSize, videoOrientation: videoOrientation)
+                }
             }
         }
     }